Yes ... what you said last is right. Unless i open the first book, im not
able to open any other book. what may be the problem?
I have had a quick look through a couple of the forums and cannot find anything on this. Can anyone else recall this being an issue?
To search the forums first type something like "first book" in Ask a Question. That well return all hits from Adobe's entire product range so then type "Robo" in the filter that will be available. You will then see a list of RoboHelp forums. Select one and click Search to get filtered results. You have to try each RoboHelp forum in turn.
If that does not help, try another project such as one of the samples.
See www.grainge.org for RoboHelp and Authoring tips